tempdir: Add a `into_dir` method (#363) #1706

Job	Run time
Check Cross-Compilation on Rust nightly (nightly)	1m 54s
Check Cross-Compilation on Rust nightly on Windows (nightly)	1m 38s
Check Cross-Compilation (stable)	1m 15s
Check Cross-Compilation on Windows (stable)	3m 5s
Fuzz Targets	45s
Check Cross-Compilation on Windows (beta)	1m 16s
Check Cross-Compilation (beta)	1m 27s
Rustfmt	6s
Test linux-raw support (ubuntu)	30s
Test (msrv)	1m 13s
Test linux-raw support (ubuntu-20.04)	27s
Test on Musl (ubuntu)	39s
Test with Rust nightly (ubuntu)	28s
Test with Rust nightly (windows)	1m 36s
	16m 19s

Provide feedback